How to Determine Which A9 Chip Is In Your iPhone

*UPDATE*  Apple has given a statement to TechCrunch saying that the actual difference is around 2-3% based on internal testing.  This difference can vary between all iPhones, with the same parts, regardless of chip.  Also worth noting, the app listed below has apparently been removed from the AppStore.

If you haven't heard by now there is some drama building up regarding which A9 chip in the new iPhones is better.  This year it was dual sourced from both TSMC and Samsung.  Early reports suggested that the Samsung chip would be the superior chip due to the smaller size and, well, Samsung.

Recently stories have been circulating that the TSMC A9 chip is actually the superior chip.  Although bigger in size, it is apparently more efficient and has the potential to increase battery life by up to 20% (still being tested).  But if you are curious as to which A9 chip is in your iPhone you can head over to the AppStore and download Lirum Device Info Lite.  Once downloaded, open the app and compare the Model number to the ones listed below:

N66AP (6s plus) or N71AP (6s) - Samsung chip
N66MAP (6s plus) or N71MAP (6s) - TSMC chip

It has been reported that if you have a 6s you have a higher chance of having the TSMC while the 6s+ has a higher chance of having the Samsung chip.